Attachment for vacuum cleaners



May I, 1928. 1,668,036

- c. AALBORG ATTACHMENT FOR VACUUM CLEANERS Filed June 13. 1924 INVENTOR Chr/sfian AaZha g.

ATTORNEY Patented May 1, 1328.

CHRISTIAN AALBORG, OF PITTSBURGH, PENNSYLVANIL ATTACHMENT FOR VACUUM CLEANERS.

Application fled June 18, 1924. Serial No. 718,703.

My invention relates to attachments for vacuum cleanersand particularly to tool attachments for vacuum cleaners of the type illustrated and described in my co ending application, Serial No. 652,684, filed uly 20, 1923, for vacuum sweepers.

The primary object of my 1nvent1on 1s the provision of a vacuum cleaner with an aux iliary cleaner having a suction opening and a discharge opening therein.

Another object of my invention 1s to' provide an attachment for the casing of a vacuum cleaner for communicating the sucking and blowing action in the cleaner to a tool in order that a blowing and a vacuum effectmay be exercised at a distance from the cas- %& further object of my invention is to provide an attachment .which may be 1m sorted into the path of travel of air in a vacuum-cleaner casing to interfere w1th the circulation of air in a closed path in the casing, to lead the air away from the casing to a tool and to conduct air from the tool to the casing.

A still further object of my inventlon 1s to provide connections between a vacuumcleaner casing and a tool, for drawing air through the suction nozzle on the tool and conductin it to the casing and for lead ng air from the casing to the tool and forcing it through a discharge nozzle on the tool.

In the drawings, Figure 1 is a side elevational view of my attachment applied to a casing, parts of the casing and parts of the tool being shown in section.

Fi 2 is a detail top plan view showmg the c osure disc and the parts of the casing to which it is immediately applied.

gig. 3 is a detail plan view of the tool, an

Fig. 4 is a vertical sectional view on the line IVIV of Fig. 2.

The vacuum-cleaner casin comprises a hood 10 and a dome 11 secure thereto which may be constructed as illustrated and described in my above-mentioned co endin application. The hood 10 has a longitudina air channel 12 therein extending along its upper wall. Air is drawn from a suction nozzle 13-through the channel 12 by a fan 14 and forced by the fan into a dust chamber 15. The hood 10 is provided with a flange 16 within which a pan 17 is fitted and detachably secured in position by clips 18, as described in my copending application.

. thereto.

The pan 17 is formed in all respects similar to the pan in said application, exce t that it has an extension 20 formed on its ront end. The extension 20 is substantially flat and is provided with a downward deformation 21 which provides clearance for a brush 22. The extreme front edge of the extension 20 is formed into a flange 23 fitted upwardly about the nozzle 13.

. The pan 17 carries a filter 24, as described 1n my above mentioned ap lication, and a passage 25 is provided lon itudinall of the pan 17 for air forced t rough the dust chamber 15. The passage 25 communicates with the nozzle 13 and the channel 12 so that there is a substantially closed path of travel for the air. v

The hood 10 has a circular opening 26 in its upper wall and is provided with a shoulder 27 bordering the opening. A closure disc 28, constituting a partof the attachment, is provided with a peripherical flange 30 to engage the shoulder 27 and may be held 1n position by means of thumb screws 28a or other clamping devices. The closure disc has an outlet orifice 31' therein about which a nipple 32 is formed and an inlet a orifice 33 about which a nipple 34 is formed.

-A hose 35 is secured to the nipple 32 by means of a connection 36 which 1s slipped over the nipple and maintained in position by a bayonet joint 37. A hose 38 is secured to the nipple 34 by a connection 40 and a bayonet 41. The hose 35 is secured to a tool 42 bya connection 43, and the hose 38 is secured to the tool 42 by a connection 44. The tool 42 is provided with a suction nozzle 45 extending its entire width and with a discharge nozzle 46 extendin alongside the suction' nozzle and imme lately adjacent An air passageway-47 is rovided in the tool to communicate with ehose 38 and the suction nozzle 45. A similar air passageway 48 is provided to communicate with the hose 35 and the nozzle 46. The passa eways are separated by a partition 49 t e edge of which, extending between nozzles 45 and 46, is substantially horizontal. The

partition is twisted in shape and, at its other end, is substantially vertical.

A partition 50 is formed on the closure disc 28 and extends transversely'from wall 51 to wall 52 of the air channel 12. The

tom wall 53'of the channe 12 and is provided with a slot to receive a tubular housing 54 which, as described in my co ending application, surrounds a shaft 55. e bottom wall 53 has an opening which is covered b a plate 56. A lug 57 is formed on the plate 56 and projects upwardly to engage the surface of the housing 54. I

The slot in the partition is of such form and dimensions as to ensure a close fit against the hOIlSlDg' 54 and the edges of the lu to completely close the air channel 12.

%n the operation of the device, the fan 14 exerts a suction action in the air channel 12 which is communicated to the hose 38 and thence to the air passageway 47 and the suction nozzle 45, The fan also drives air downwardly through the dust chamber 15 over the pan 17 past the brush 22 and into the suction nozzle 13 on the hood whence it is forced upwardly and through the outlet orifice 31.

Since the partition 50 prevents the passage of air rearwardl thereof, it is forced into the tube 35 an thence into the tool 42 through the passa eway 48 and the discharge nozzle 46. e tool 42 is manipulated by hand after the common fashion of mani ulating cleaner tools, and the suction and ischarge nozzles are brought into contact with the surfaces of objects to be cleaned. As the discharge nozzle is immediately adjacent to the suction nozzle, the dirt freed by action of the air is sucked in so that the operation of the tool results in no inconvenience to the user, and efiicient action results from the simultaneous blowing and sucking. The air is drawn through thesuction nozzle and forced by the fan 14 through the filter 24 so that it is cleaned and its path of travel through the tool 42, the hose 35 and 38 and the casing is substantially closed.

The filter may be cleaned by removing the pan 17 on the release of clips 18. The attachment may be removed by withdrawing the thumb screws 28a and pan 17 may be removed, and the vacuum cleaner may be used as described in my above-mentioned application.

The invention is not limited to the embodiment disclosed as it is capa 1e of being changed and modified extensively, and a su stantial range of equivalents within the scope of the appended claims is contemplated.

I claim as my invention:

1. A vacuum cleaner comprising a hollow casing rovided with a horizontal partition separating the space therein into lower and upper communicating )assages, a motor supported at the rear 0 the casing with its shaft extending into the casing, an impeller on the motor shaft and having an inlet from the upper passage and an outlet into the lower passage, means insertible from the top of the casing through an opening therein to serve as a barrier and deflector to permit the current of air drawn by the impeller to enter the upper passage through the openin in the casing on one side of the barrier, an to permit the air forced through the lower passage to pass through the opening in the casing on the other side of the barrier, and means whereby the air currents may be utilized externally of the casing as a cleaning medium.

2. A vacuum cleaner comprisin a hollow casing provided with a horizontal partition separatm the space in the easing into an upper an a lower passage, a motor-driven impeller for drawing a current of air from one passage and forcing it into the other passage, at one end of the passages, means insertible through an opening in the casing near the other end of the passages for separatin the passages and serving as a barrier there tween, to permitthe current of air to be drawn in through the one passage through said opening on one side of the barrier and forced through the other passage and out through said opening on the other side of the barrier, and means whereby the currents of air so established may be utilized beyond the cleaner casing. a.

In testimony whereof, I have hereunto subscribed my name this 6th day of June,

- CHRISTIAN AALBORG.

recise 50 

